Oh, he is so incredible ... and I think it's because he truly knows the fraility of we humans so well. He's lived all depths and heights of humanity, and it took devastation and grievous loss before his mother's years of relentless prayers for his life resulted in his heart being touched to this calling pretty late in life.
http://www.frtommylane.com/homilies/year_a/17-2.htm
He especially loves the winters there, where he can have peace and solitude for and he spends most of the winters in quiet reflection. :)
He mentioned during one of his talks that he's on the road most of the year, so the "quiet times" he really takes advantage of.